Concoa 5803007, Инструкция по установке и эксплуатации, Страница: 5 / 60

4
1: Introduction
The Dual O2/CO2
Monitor is a compact gas monitoring system that’s ideal for the
continuous monitoring of inert gas storage areas, confined spaces, and other locations
where low oxygen levels may pose a hazard to personnel. Unlike electrochemical
sensor cells the
Dual O2/CO2 Zirconium oxygen cell and patented NDIR CO
2
cell
provide stable readings even in areas where temperature and humidity levels are
changing. The
CONCOA Dual O2/CO2 Monitor is suitable for either indoor or outdoor
use. Factory calibrated against a NIST traceable reference standard and CE approved.
The heart of the monitoring system is a long-lasting zirconium sensor for oxygen and
NDIR self-calibrating carbon dioxide sensor. The oxygen cell responds to low oxygen
conditions within seconds and provides accurate measurements over a wide
temperature and humidity range. The Zirconium O
2
sensor cell will operate
continuously for 10 or more years and requires an absolute minimum of maintenance.
There are no zero or span calibration pots to adjust and, when compared to disposable
type sensors, our long life Zirconium O
2
sensor can save up to hundreds of dollars in
annual maintenance.
Ideal for continuously monitoring oxygen levels in confined spaces or areas where inert
gases are used, the
Dual O2/CO2 Monitor does not drift or lose sensitivity when the
weather or temperature changes. The electronics are housed in a Nema 3 housing.
Each system consists of a long life zirconium oxide sensor cell and three-wire
transmitter. The
Dual O2/CO2 monitor may be used as a stand-alone gas detector,
linked to optional CONCOA single and multipoint controllers, or connected to your own
centralized control and surveillance system. This manual covers the installation,
operation, and maintenance of the
Dual O2/CO2 monitor.
1.1 Key Features
The Dual O2/CO2 monitor incorporates a number of user-friendly features designed
to simplify installation, operation, and maintenance.
1.1.1 Long Life Zirconium Oxide O
2
Sensor
The system’s O
2
sensor cell has a life of well over 10 years of continuous operation.
Unlike concentration O
2
cells, CONCOA’s exclusive zirconium oxide sensor cell does
not need an oxygen reference gas for proper operation. The Dual O2/CO2 monitor
can detect low oxygen levels in confined spaces and process tools without the need of
a reference gas.